The 24mm Brandon is the "odd man out" in that it has a wider AFOV than the rest. Though they're all putatively 50-degrees, they aren't really. I suspect the "average" is around 43-degees and the 24mm is closer to 53-degrees. Problem is, in anything approaching a "fast" scope (anything faster than f/8) the outer portion of the field is quite astigmatic (:barf:).

But...remember the Dakin! The matched Barlow for the Brandon line is the 2.4x Dakin Barlow. When you mate the 2.4x Dakin with the 24mm Brandon, you're operating at 10mm with a 53-degree fairly well corrected AFOV with ~19mm of eye relief.

In other words, it was a 10mm Radian long before there was a 10mm Radian.

While I'm not naturally drawn to barlows, I gotta admit the Dakin 2.4X also works magic with my Brandon 16 and 12. Oh, I'll still prefer my Brandon 8, 6, and UOHD 5, but for sharing views with my eyeglasses-wearing friends, the Dakined longer-focus Brandons don't give up much!

Also I'm fond of the 2.8X Klee Barlow for more "in-between" magnifications--try that with an old 28mm Ortho or RKE!

So because I have a f/4.9 telescope I have to probably spend more on the eyepieces then I did on the scope?

You *can*, but you really don't *have to*. An inexpensive set of Plossls will do just fine for now, and if you decide to stick with the hobby and wish to upgrade someday, there will be plenty of opportunity to do that later.

So because I have a f/4.9 telescope I have to probably spend more on the eyepieces then I did on the scope? Just got itbsobim just learning, please bare with me

Back in the day that was the case, but nowadays there are suitable alternatives, explore scientific comes to mind as a good value that handles fast newtonians well, 82deg especially. Wide fields come in handy if it is a dob, but if it is on a tracking platform or driven mount, good plossls work fine until you get spoiled by darth nagler and emperor ethos. And even then, Explore scientific to the rescue, $299 for a waterproof 100deg 20mm eyepiece, much less than half the price of the ethos, and at least 80% of the performance. $100 a piece for 1.25" 82degs 4.7,6.7,8.8,11,14mm is a bargain too. If I didn't already have a mixed bag of older meade UWA, Nagler and Pentax, I would snatch them up. Note that I DO have both 14mm and 20mm ES100's, and they curb my ethos lust quite well. I have not yet experienced Delos, since I was pulled out of the game just before they hit the market.

Once again your insight uncovers an important piece of the riddle of the Brandons.

The Dakin has proven to be an extraordinary barlow (and the only one I have kept) since I got mine in 1985. It's match to the 24mm with its wider FOV is amazing and it does make all of the Brandons a whole "new" set with intermediate mags and virtually no loss or "interference" with the image. Just another one of those interesting little things about how good these "old" deisgns are.

According to the post, it matches the 24mm Brandon. I interpret that as meaning the combination is greater than the sum of the parts. Or something like that.The Dakin, with its 2.4x magnification, is intended to complement the Brandons by making a whole new set of eyepieces with no duplications.

I've got a Dakin, but I confess I haven't used it hardly at all (you don't need a barlow in a big SCT), so I can't say from personal experience.

I hardly ever use a Barlow any more; virtually never for deep sky, hardly ever for planets/Moon. But I do screw on a Barlow lens cell in order to compensate for not enough in-focus when I use a binoviewer or filter wheel on my Newts. Other than that, I'd rather utilize individual eyepieces. I've recently sold a couple of my Barlows. Just wasn't using them.

According to the post, it matches the 24mm Brandon. I interpret that as meaning the combination is greater than the sum of the parts. Or something like that.
The Dakin, with its 2.4x magnification, is intended to complement the Brandons by making a whole new set of eyepieces with no duplications.

I've got a Dakin, but I confess I haven't used it hardly at all (you don't need a barlow in a big SCT), so I can't say from personal experience.